Diagnosis/troubleshooting - all turbo models
NOTE:
- The DTC (diagnostic trouble code) covers all electrical faults here.
Diagnostic conditions
- Engine temperature greater than 60°C
- 3 minutes idle speed, then 30 seconds increased idle speed
Possible cause of fault
- Short circuit to B+
- Short circuit to ground
- Open circuit
- Oxygen sensor faulty
- Control module faulty
Affected pins
DME control module connector II, pin 9 and oxygen sensor jack, bank 1, pin 5
DME control module connector II, pin 15 and oxygen sensor jack, bank 1, pin 1
DME control module connector II, pin 2 and pin 5
Diagnosis/troubleshooting
NOTE:
- Do not use contact spray on the oxygen sensor plug connections as this may cause irreparable damage to the wiring (contamination of the oxygen sensor via the reference air channel).